includes/ChangesList.php

   1 <?php
   2 /**
   3  * @package MediaWiki
   4  * Contain class to show various lists of change:
   5  * - what's link here
   6  * - related changes
   7  * - recent changes
   8  */
   9
  10 require_once("RecentChange.php");
  11 /**
  12  * @todo document
  13  * @package MediaWiki
  14  */
  15 class RCCacheEntry extends RecentChange
  16 {
  17         var $secureName, $link;
  18         var $curlink , $difflink, $lastlink , $usertalklink , $versionlink ;
  19         var $userlink, $timestamp, $watched;
  20
  21         function newFromParent( $rc )
  22         {
  23                 $rc2 = new RCCacheEntry;
  24                 $rc2->mAttribs = $rc->mAttribs;
  25                 $rc2->mExtra = $rc->mExtra;
  26                 return $rc2;
  27         }
  28 } ;
  29
  30 /**
  31  * @package MediaWiki
  32  */
  33 class ChangesList {
  34         # Called by history lists and recent changes
  35         #
  36
  37         /** @todo document */
  38         function ChangesList( &$skin ) {
  39                 $this->skin =& $skin;
  40                 $this->preCacheMessages();
  41         }
  42
  43         function newFromUser( &$user ) {
  44                 $sk =& $user->getSkin();
  45                 if( $user->getOption('usenewrc') ) {
  46                         return new EnhancedChangesList( $sk );
  47                 } else {
  48                         return new OldChangesList( $sk );
  49                 }
  50         }
  51
  52         /**
  53          * As we use the same small set of messages in various methods and that
  54          * they are called often, we call them once and save them in $this->message
  55          */
  56         function preCacheMessages() {
  57                 // Precache various messages
  58                 if( !isset( $this->message ) ) {
  59                         foreach( explode(' ', 'cur diff hist minoreditletter newpageletter last blocklink' ) as $msg ) {
  60                                 $this->message[$msg] = wfMsg( $msg );
  61                         }
  62                 }
  63         }
  64
  65
  66         /**
  67          * Returns the appropiate flags for new page, minor change and patrolling
  68          */
  69         function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&nbsp;' ) {
  70                 $f = $new ? '<span class="newpage">' . wfMsgHtml( 'newpageletter' ) . '</span>'
  71                                 : $nothing;
  72                 $f .= $minor ? '<span class="minor">' . wfMsgHtml( 'minoreditletter' ) . '</span>'
  73                                 : $nothing;
  74                 $f .= $patrolled ? '<span class="unpatrolled">!</span>' : $nothing;
  75                 return $f;
  76         }
  77
  78         /**
  79          * Returns text for the start of the tabular part of RC
  80          */
  81         function beginRecentChangesList() {
  82                 $this->rc_cache = array();
  83                 $this->rcMoveIndex = 0;
  84                 $this->rcCacheIndex = 0;
  85                 $this->lastdate = '';
  86                 $this->rclistOpen = false;
  87                 return '';
  88         }
  89
  90         /**
  91          * Returns text for the end of RC
  92          */
  93         function endRecentChangesList() {
  94                 if( $this->rclistOpen ) {
  95                         return "</ul>\n";
  96                 } else {
  97                         return '';
  98                 }
  99         }
 100
 101
 102         function insertMove( &$s, $rc ) {
 103                 # Diff
 104                 $s .= '(' . $this->message['diff'] . ') (';
 105                 # Hist
 106                 $s .= $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), $this->message['hist'], 'action=history' ) .
 107                         ') . . ';
 108
 109                 # "[[x]] moved to [[y]]"
 110                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 111                 $s .= wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 112                         $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 113         }
 114
 115         function insertDateHeader(&$s, $rc_timestamp) {
 116                 global $wgLang;
 117
 118                 # Make date header if necessary
 119                 $date = $wgLang->date( $rc_timestamp, true, true );
 120                 $s = '';
 121                 if( $date != $this->lastdate ) {
 122                         if( '' != $this->lastdate ) {
 123                                 $s .= "</ul>\n";
 124                         }
 125                         $s .= '<h4>'.$date."</h4>\n<ul class=\"special\">";
 126                         $this->lastdate = $date;
 127                         $this->rclistOpen = true;
 128                 }
 129         }
 130
 131         function insertLog(&$s, $title, $logtype) {
 132                 $logname = LogPage::logName( $logtype );
 133                 $s .= '(' . $this->skin->makeKnownLinkObj($title, $logname ) . ')';
 134         }
 135
 136
 137         function insertDiffHist(&$s, &$rc, $unpatrolled) {
 138                 # Diff link
 139                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 140                         $diffLink = $this->message['diff'];
 141                 } else {
 142                         $rcidparam = $unpatrolled
 143                                 ? array( 'rcid' => $rc->mAttribs['rc_id'] )
 144                                 : array();
 145                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'],
 146                                 wfArrayToCGI( array(
 147                                         'curid' => $rc->mAttribs['rc_cur_id'],
 148                                         'diff'  => $rc->mAttribs['rc_this_oldid'],
 149                                         'oldid' => $rc->mAttribs['rc_last_oldid'] ),
 150                                         $rcidparam ),
 151                                 '', '', ' tabindex="'.$rc->counter.'"');
 152                 }
 153                 $s .= '('.$diffLink.') (';
 154
 155                 # History link
 156                 $s .= $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['hist'],
 157                         wfArrayToCGI( array(
 158                                 'curid' => $rc->mAttribs['rc_cur_id'],
 159                                 'action' => 'history' ) ) );
 160                 $s .= ') . . ';
 161         }
 162
 163         function insertArticleLink(&$s, &$rc, $unpatrolled, $watched) {
 164                 # Article link
 165                 # If it's a new article, there is no diff link, but if it hasn't been
 166                 # patrolled yet, we need to give users a way to do so
 167                 $params = ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW )
 168                         ? 'rcid='.$rc->mAttribs['rc_id']
 169                         : '';
 170                 $articlelink = ' '. $this->skin->makeKnownLinkObj( $rc->getTitle(), '', $params );
 171                 if($watched) $articlelink = '<strong>'.$articlelink.'</strong>';
 172
 173                 $s .= ' '.$articlelink;
 174         }
 175
 176         function insertTimestamp(&$s, &$rc) {
 177                 global $wgLang;
 178                 # Timestamp
 179                 $s .= '; ' . $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 180         }
 181
 182         /** Insert links to user page, user talk page and eventually a blocking link */
 183         function insertUserRelatedLinks(&$s, &$rc) {
 184                 $s .= $this->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 185                 $s .= $this->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 186         }
 187
 188         /** insert a formatted comment */
 189         function insertComment(&$s, &$rc) {
 190                 # Add comment
 191                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 192                         $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 193                 }
 194         }
 195
 196         /**
 197          * Check whether to enable RC-Patrol features
 198          * @return bool
 199          */
 200         function usePatrol() {
 201                 global $wgUseRCPatrol, $wgOnlySysopsCanPatrol, $wgUser;
 202                 return $wgUseRCPatrol && $wgUser->isLoggedIn() &&
 203                   ( !$wgOnlySysopsCanPatrol || $wgUser->isAllowed( 'patrol' ) );
 204         }
 205
 206         /**
 207          * Make user link (or user contributions for unregistered users)
 208          * @param int $userId
 209          * @param string $userText
 210          * @return string HTML fragment
 211          * @access private
 212          */
 213         function userLink( $userId, $userText ) {
 214                 $encName = htmlspecialchars( $userText );
 215                 if( $userId == 0 ) {
 216                         $contribsPage = Title::makeTitle( NS_SPECIAL, 'Contributions' );
 217                         return $this->skin->makeKnownLinkObj( $contribsPage,
 218                                 $encName, 'target=' . urlencode( $userText ) );
 219                 } else {
 220                         $userPage = Title::makeTitle( NS_USER, $userText );
 221                         return $this->skin->makeLinkObj( $userPage, $encName );
 222                 }
 223         }
 224
 225         /**
 226          * @param int $userId
 227          * @param string $userText
 228          * @return string HTML fragment with talk and/or block links
 229          * @access private
 230          */
 231         function userToolLinks( $userId, $userText ) {
 232                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 233                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 234                 $blockable = ( $wgSysopUserBans || 0 == $userId );
 235
 236                 $items = array();
 237                 if( $talkable ) {
 238                         $items[] = $this->userTalkLink( $userId, $userText );
 239                 }
 240                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 241                         $items[] = $this->blockLink( $userId, $userText );
 242                 }
 243
 244                 if( $items ) {
 245                         return ' (' . implode( ' | ', $items ) . ')';
 246                 } else {
 247                         return '';
 248                 }
 249         }
 250
 251         /**
 252          * @param int $userId
 253          * @param string $userText
 254          * @return string HTML fragment with user talk link
 255          * @access private
 256          */
 257         function userTalkLink( $userId, $userText ) {
 258                 global $wgContLang;
 259                 $talkname = $wgContLang->getNsText( NS_TALK ); # use the shorter name
 260
 261                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 262                 $userTalkLink = $this->skin->makeLinkObj( $userTalkPage, $talkname );
 263                 return $userTalkLink;
 264         }
 265
 266         /**
 267          * @param int $userId
 268          * @param string $userText
 269          * @return string HTML fragment with block link
 270          * @access private
 271          */
 272         function blockLink( $userId, $userText ) {
 273                 $blockPage = Title::makeTitle( NS_SPECIAL, 'Blockip' );
 274                 $blockLink = $this->skin->makeKnownLinkObj( $blockPage,
 275                         $this->message['blocklink'], 'ip=' . urlencode( $userText ) );
 276                 return $blockLink;
 277         }
 278
 279 }
 280
 281
 282 /**
 283  * Generate a list of changes using the good old system (no javascript)
 284  */
 285 class OldChangesList extends ChangesList {
 286         /**
 287          * Format a line using the old system (aka without any javascript).
 288          */
 289         function recentChangesLine( &$rc, $watched = false ) {
 290                 global $wgContLang;
 291
 292                 $fname = 'ChangesList::recentChangesLineOld';
 293                 wfProfileIn( $fname );
 294
 295
 296                 # Extract DB fields into local scope
 297                 extract( $rc->mAttribs );
 298                 $curIdEq = 'curid=' . $rc_cur_id;
 299
 300                 # Should patrol-related stuff be shown?
 301                 $unpatrolled = $this->usePatrol() && $rc_patrolled == 0;
 302
 303                 $this->insertDateHeader($s,$rc_timestamp);
 304
 305                 $s .= '<li>';
 306
 307                 // moved pages
 308                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 309                         $this->insertMove( $s, $rc );
 310                 // log entries
 311                 } elseif( $rc_namespace == NS_SPECIAL && preg_match( '!^Log/(.*)$!', $rc_title, $matches ) ) {
 312                         $this->insertLog($s, $rc->getTitle(), $matches[1]);
 313                 // all other stuff
 314                 } else {
 315                         wfProfileIn($fname.'-page');
 316
 317                         $this->insertDiffHist($s, $rc, $unpatrolled);
 318
 319                         # M, N and ! (minor, new and unpatrolled)
 320                         $s .= ' ' . $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $unpatrolled, '' );
 321                         $this->insertArticleLink($s, $rc, $unpatrolled, $watched);
 322
 323                         wfProfileOut($fname.'-page');
 324                 }
 325
 326                 wfProfileIn( $fname.'-rest' );
 327
 328                 $this->insertTimestamp($s,$rc);
 329                 $this->insertUserRelatedLinks($s,$rc);
 330                 $this->insertComment($s, $rc);
 331
 332                 if($rc->numberofWatchingusers > 0) {
 333                         $s .= ' ' . wfMsg('number_of_watching_users_RCview',  $wgContLang->formatNum($rc->numberofWatchingusers));
 334                 }
 335
 336                 $s .= "</li>\n";
 337
 338                 wfProfileOut( $fname.'-rest' );
 339
 340                 wfProfileOut( $fname );
 341                 return $s;
 342         }
 343 }
 344
 345
 346 /**
 347  * Generate a list of changes using an Enhanced system (use javascript).
 348  */
 349 class EnhancedChangesList extends ChangesList {
 350         /**
 351          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 352          */
 353         function recentChangesLine( &$baseRC, $watched = false ) {
 354                 global $wgLang, $wgContLang;
 355
 356                 # Create a specialised object
 357                 $rc = RCCacheEntry::newFromParent( $baseRC );
 358
 359                 # Extract fields from DB into the function scope (rc_xxxx variables)
 360                 extract( $rc->mAttribs );
 361                 $curIdEq = 'curid=' . $rc_cur_id;
 362
 363                 # If it's a new day, add the headline and flush the cache
 364                 $date = $wgLang->date( $rc_timestamp, true);
 365                 $ret = '';
 366                 if( $date != $this->lastdate ) {
 367                         # Process current cache
 368                         $ret = $this->recentChangesBlock();
 369                         $this->rc_cache = array();
 370                         $ret .= "<h4>{$date}</h4>\n";
 371                         $this->lastdate = $date;
 372                 }
 373
 374                 # Should patrol-related stuff be shown?
 375                 if( $this->usePatrol() ) {
 376                         $rc->unpatrolled = !$rc_patrolled;
 377                 } else {
 378                         $rc->unpatrolled = false;
 379                 }
 380
 381                 # Make article link
 382                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 383                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 384                         $clink = wfMsg( $msg, $this->skin->makeKnownLinkObj( $rc->getTitle(), '', 'redirect=no' ),
 385                           $this->skin->makeKnownLinkObj( $rc->getMovedToTitle(), '' ) );
 386                 } elseif( $rc_namespace == NS_SPECIAL && preg_match( '!^Log/(.*)$!', $rc_title, $matches ) ) {
 387                         # Log updates, etc
 388                         $logtype = $matches[1];
 389                         $logname = LogPage::logName( $logtype );
 390                         $clink = '(' . $this->skin->makeKnownLinkObj( $rc->getTitle(), $logname ) . ')';
 391                 } elseif( $rc->unpatrolled && $rc_type == RC_NEW ) {
 392                         # Unpatrolled new page, give rc_id in query
 393                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '', "rcid={$rc_id}" );
 394                 } else {
 395                         $clink = $this->skin->makeKnownLinkObj( $rc->getTitle(), '' );
 396                 }
 397
 398                 $time = $wgContLang->time( $rc_timestamp, true, true );
 399                 $rc->watched = $watched;
 400                 $rc->link = $clink;
 401                 $rc->timestamp = $time;
 402                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 403
 404                 # Make "cur" and "diff" links
 405                 $titleObj = $rc->getTitle();
 406                 if( $rc->unpatrolled ) {
 407                         $rcIdQuery = "&rcid={$rc_id}";
 408                 } else {
 409                         $rcIdQuery = '';
 410                 }
 411                 $querycur = $curIdEq."&diff=0&oldid=$rc_this_oldid";
 412                 $querydiff = $curIdEq."&diff=$rc_this_oldid&oldid=$rc_last_oldid$rcIdQuery";
 413                 $aprops = ' tabindex="'.$baseRC->counter.'"';
 414                 $curLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['cur'], $querycur, '' ,'', $aprops );
 415                 if( $rc_type == RC_NEW || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 416                         if( $rc_type != RC_NEW ) {
 417                                 $curLink = $this->message['cur'];
 418                         }
 419                         $diffLink = $this->message['diff'];
 420                 } else {
 421                         $diffLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['diff'], $querydiff, '' ,'', $aprops );
 422                 }
 423
 424                 # Make "last" link
 425                 if( $rc_last_oldid == 0 || $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 426                         $lastLink = $this->message['last'];
 427                 } else {
 428                         $lastLink = $this->skin->makeKnownLinkObj( $rc->getTitle(), $this->message['last'],
 429                           $curIdEq.'&diff='.$rc_this_oldid.'&oldid='.$rc_last_oldid . $rcIdQuery );
 430                 }
 431
 432                 $rc->userlink = $this->userLink( $rc_user, $rc_user_text );
 433
 434                 $rc->lastlink = $lastLink;
 435                 $rc->curlink  = $curLink;
 436                 $rc->difflink = $diffLink;
 437
 438                 $rc->usertalklink = $this->userToolLinks( $rc_user, $rc_user_text );
 439
 440                 # Put accumulated information into the cache, for later display
 441                 # Page moves go on their own line
 442                 $title = $rc->getTitle();
 443                 $secureName = $title->getPrefixedDBkey();
 444                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 445                         # Use an @ character to prevent collision with page names
 446                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 447                 } else {
 448                         if( !isset ( $this->rc_cache[$secureName] ) ) {
 449                                 $this->rc_cache[$secureName] = array();
 450                         }
 451                         array_push( $this->rc_cache[$secureName], $rc );
 452                 }
 453                 return $ret;
 454         }
 455
 456         /**
 457          * Enhanced RC group
 458          */
 459         function recentChangesBlockGroup( $block ) {
 460                 $r = '';
 461
 462                 # Collate list of users
 463                 $isnew = false;
 464                 $unpatrolled = false;
 465                 $userlinks = array();
 466                 foreach( $block as $rcObj ) {
 467                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 468                         $newid = $rcObj->mAttribs['rc_this_oldid'];
 469                         if( $rcObj->mAttribs['rc_new'] ) {
 470                                 $isnew = true;
 471                         }
 472                         $u = $rcObj->userlink;
 473                         if( !isset( $userlinks[$u] ) ) {
 474                                 $userlinks[$u] = 0;
 475                         }
 476                         if( $rcObj->unpatrolled ) {
 477                                 $unpatrolled = true;
 478                         }
 479                         $userlinks[$u]++;
 480                 }
 481
 482                 # Sort the list and convert to text
 483                 krsort( $userlinks );
 484                 asort( $userlinks );
 485                 $users = array();
 486                 foreach( $userlinks as $userlink => $count) {
 487                         $text = $userlink;
 488                         if( $count > 1 ) {
 489                                 $text .= ' ('.$count.'&times;)';
 490                         }
 491                         array_push( $users, $text );
 492                 }
 493
 494                 $users = ' <span class="changedby">['.implode('; ',$users).']</span>';
 495
 496                 # Arrow
 497                 $rci = 'RCI'.$this->rcCacheIndex;
 498                 $rcl = 'RCL'.$this->rcCacheIndex;
 499                 $rcm = 'RCM'.$this->rcCacheIndex;
 500                 $toggleLink = "javascript:toggleVisibility('$rci','$rcm','$rcl')";
 501                 $tl  = '<span id="'.$rcm.'"><a href="'.$toggleLink.'">' . $this->sideArrow() . '</a></span>';
 502                 $tl .= '<span id="'.$rcl.'" style="display:none"><a href="'.$toggleLink.'">' . $this->downArrow() . '</a></span>';
 503                 $r .= $tl;
 504
 505                 # Main line
 506                 $r .= '<tt>';
 507                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled );
 508
 509                 # Timestamp
 510                 $r .= ' '.$block[0]->timestamp.' ';
 511                 $r .= '</tt>';
 512
 513                 # Article link
 514                 $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 515
 516                 $curIdEq = 'curid=' . $block[0]->mAttribs['rc_cur_id'];
 517                 $currentRevision = $block[0]->mAttribs['rc_this_oldid'];
 518                 if( $block[0]->mAttribs['rc_type'] != RC_LOG ) {
 519                         # Changes
 520                         $r .= ' ('.count($block).' ';
 521                         if( $isnew ) {
 522                                 $r .= wfMsg('changes');
 523                         } else {
 524                                 $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(), wfMsg('changes'),
 525                                         $curIdEq."&diff=$currentRevision&oldid=$oldid" );
 526                         }
 527                         $r .= '; ';
 528
 529                         # History
 530                         $r .= $this->skin->makeKnownLinkObj( $block[0]->getTitle(), wfMsg( 'history' ), $curIdEq.'&action=history' );
 531                         $r .= ')';
 532                 }
 533
 534                 $r .= $users;
 535
 536                 if($block[0]->numberofWatchingusers > 0) {
 537                         global $wgContLang;
 538                         $r .= wfMsg('number_of_watching_users_RCview',  $wgContLang->formatNum($block[0]->numberofWatchingusers));
 539                 }
 540                 $r .= "<br />\n";
 541
 542                 # Sub-entries
 543                 $r .= '<div id="'.$rci.'" style="display:none">';
 544                 foreach( $block as $rcObj ) {
 545                         # Get rc_xxxx variables
 546                         extract( $rcObj->mAttribs );
 547
 548                         $r .= $this->spacerArrow();
 549                         $r .= '<tt>&nbsp; &nbsp; &nbsp; &nbsp;';
 550                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled );
 551                         $r .= '&nbsp;</tt>';
 552
 553                         $o = '';
 554                         if( $rc_this_oldid != 0 ) {
 555                                 $o = 'oldid='.$rc_this_oldid;
 556                         }
 557                         if( $rc_type == RC_LOG ) {
 558                                 $link = $rcObj->timestamp;
 559                         } else {
 560                                 $link = $this->skin->makeKnownLinkObj( $rcObj->getTitle(), $rcObj->timestamp, $curIdEq.'&'.$o );
 561                         }
 562                         $link = '<tt>'.$link.'</tt>';
 563
 564                         $r .= $link;
 565                         $r .= ' (';
 566                         $r .= $rcObj->curlink;
 567                         $r .= '; ';
 568                         $r .= $rcObj->lastlink;
 569                         $r .= ') . . '.$rcObj->userlink;
 570                         $r .= $rcObj->usertalklink;
 571                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 572                         $r .= "<br />\n";
 573                 }
 574                 $r .= "</div>\n";
 575
 576                 $this->rcCacheIndex++;
 577                 return $r;
 578         }
 579
 580         function maybeWatchedLink( $link, $watched=false ) {
 581                 if( $watched ) {
 582                         // FIXME: css style might be more appropriate
 583                         return '<strong>' . $link . '</strong>';
 584                 } else {
 585                         return $link;
 586                 }
 587         }
 588
 589         /**
 590          * Generate HTML for an arrow or placeholder graphic
 591          * @param string $dir one of '', 'd', 'l', 'r'
 592          * @param string $alt text
 593          * @return string HTML <img> tag
 594          * @access private
 595          */
 596         function arrow( $dir, $alt='' ) {
 597                 global $wgStylePath;
 598                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 599                 $encAlt = htmlspecialchars( $alt );
 600                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" />";
 601         }
 602
 603         /**
 604          * Generate HTML for a right- or left-facing arrow,
 605          * depending on language direction.
 606          * @return string HTML <img> tag
 607          * @access private
 608          */
 609         function sideArrow() {
 610                 global $wgContLang;
 611                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
 612                 return $this->arrow( $dir, '+' );
 613         }
 614
 615         /**
 616          * Generate HTML for a down-facing arrow
 617          * depending on language direction.
 618          * @return string HTML <img> tag
 619          * @access private
 620          */
 621         function downArrow() {
 622                 return $this->arrow( 'd', '-' );
 623         }
 624
 625         /**
 626          * Generate HTML for a spacer image
 627          * @return string HTML <img> tag
 628          * @access private
 629          */
 630         function spacerArrow() {
 631                 return $this->arrow( '', ' ' );
 632         }
 633
 634         /**
 635          * Enhanced RC ungrouped line.
 636          * @return string a HTML formated line (generated using $r)
 637          */
 638         function recentChangesBlockLine( $rcObj ) {
 639                 global $wgContLang;
 640
 641                 # Get rc_xxxx variables
 642                 extract( $rcObj->mAttribs );
 643                 $curIdEq = 'curid='.$rc_cur_id;
 644
 645                 $r = '';
 646
 647                 # Spacer image
 648                 $r .= $this->spacerArrow();
 649
 650                 # Flag and Timestamp
 651                 $r .= '<tt>';
 652
 653                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 654                         $r .= '&nbsp;&nbsp;&nbsp;';
 655                 } else {
 656                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled );
 657                 }
 658                 $r .= ' '.$rcObj->timestamp.' </tt>';
 659
 660                 # Article link
 661                 $r .= $this->maybeWatchedLink( $rcObj->link, $rcObj->watched );
 662
 663                 # Diff
 664                 $r .= ' ('. $rcObj->difflink .'; ';
 665
 666                 # Hist
 667                 $r .= $this->skin->makeKnownLinkObj( $rcObj->getTitle(), wfMsg( 'hist' ), $curIdEq.'&action=history' );
 668
 669                 # User/talk
 670                 $r .= ') . . '.$rcObj->userlink . $rcObj->usertalklink;
 671
 672                 # Comment
 673                 if( $rc_type != RC_MOVE && $rc_type != RC_MOVE_OVER_REDIRECT ) {
 674                         $r .= $this->skin->commentBlock( $rc_comment, $rcObj->getTitle() );
 675                 }
 676
 677                 if( $rcObj->numberofWatchingusers > 0 ) {
 678                         $r .= wfMsg('number_of_watching_users_RCview', $wgContLang->formatNum($rcObj->numberofWatchingusers));
 679                 }
 680
 681                 $r .= "<br />\n";
 682                 return $r;
 683         }
 684
 685         /**
 686          * If enhanced RC is in use, this function takes the previously cached
 687          * RC lines, arranges them, and outputs the HTML
 688          */
 689         function recentChangesBlock() {
 690                 if( count ( $this->rc_cache ) == 0 ) {
 691                         return '';
 692                 }
 693                 $blockOut = '';
 694                 foreach( $this->rc_cache as $secureName => $block ) {
 695                         if( count( $block ) < 2 ) {
 696                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 697                         } else {
 698                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 699                         }
 700                 }
 701
 702                 return '<div>'.$blockOut.'</div>';
 703         }
 704
 705         /**
 706          * Returns text for the end of RC
 707          * If enhanced RC is in use, returns pretty much all the text
 708          */
 709         function endRecentChangesList() {
 710                 return $this->recentChangesBlock() . parent::endRecentChangesList();
 711         }
 712
 713 }
 714 ?>